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CICLO SEDIMENTARIO [2 records]

Record 1 2012-04-19

English

Subject field(s)
  • Geology
  • Hydrology and Hydrography
DEF

A succession of strata deposited during a single cycle of deposition.

CONT

Each succession of ... lithologies, called a cyclothem, consists of a series of marine and nonmarine rock units that record a complete cycle of marine invasion and retreat. Geologists have determined, after extensive studies of the Pennsylvanian strata in the Midwest, that an "ideally" complete cyclothem consists of ten sedimentary units.

French

Domaine(s)
  • Géologie
  • Hydrologie et hydrographie
DEF

Ensemble de couches dont la réapparition régulière forme un cycle sédimentaire.

CONT

Séquence représentative de cyclothèmes à granodécroissance ascendante formés dans un milieu fluvial. Une plus forte oxydation [...] et plus grande abondance de nodules de caliche apparaissent dans les parties supérieures des cyclothèmes.

Spanish

Campo(s) temático(s)
  • Geología
  • Hidrología e hidrografía
DEF

Ciclo sedimentario de orden menor que suele incluir sedimentos marinos y continentales, intercalándose entre estos últimos capas de carbón.

Save record 1

Record 2 2010-11-08

English

Subject field(s)
  • Petrography
  • Oceanography
DEF

A series of related processes and conditions appearing repeatedly in the same sequence in a sedimentary deposit.

OBS

The sediments deposited from the beginning of one cycle to the beginning of a second cycle of the spread of the sea over a land area, consisting of the original land sediments, followed by those deposited by shallow water, then deep water, and then the reverse process of the receding water.

French

Domaine(s)
  • Pétrographie
  • Océanographie
DEF

Période de sédimentation marine qui, dans une région déterminée, est encadrée par deux régressions.

Spanish

Campo(s) temático(s)
  • Petrografía
  • Oceanografía
DEF

Secuencia de sedimentos que comprende los depósitos correspondientes a una transgresión marina y a la regresión sucesiva.

Save record 2

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